Home / 860,480.20-1,290,719.50-261,438.92

Finding the Fourth Proportional to 860,480.20, 1,290,719.50 and 261,438.92

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Solution

The fourth proportional to 860,480.20, 1,290,719.50 and 261,438.92 is: 392,158.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,480.20 : 1,290,719.50 = 261,438.92 : x
  2. Step 2: Convert to fraction form
    860,480.20/1,290,719.50 = 261,438.92/x
  3. Step 3: Cross multiply
    860,480.20x = 1,290,719.50 × 261,438.92
  4. Step 4: Simplify right side
    860,480.20x = 337,444,312,102.94
  5. Step 5: Solve for x
    x = 337,444,312,102.94/860,480.20
  6. Step 6: Final answer
    x = 392,158.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.